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Capitalized Interest (Tables) | 9 Months Ended
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Sep. 30, 2019
Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract] |
Summary of Interest Costs Incurred, Capitalized, Expensed and Charged to Cost of Sales | The following table reflects the changes in our capitalized interest during the three and nine months ended September 30, 2019 and 2018:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Interest capitalized, beginning of period |  | $ | 3,854 |  |  | $ | 5,388 |  |  | $ | 4,154 |  |  | $ | 5,583 |
Interest incurred |  | 6,596 |  |  | 6,517 |  |  | 19,702 |  |  | 19,737 |
Interest charged to interest expense |  | (6,293 | ) |  | (6,197 | ) |  | (18,809 | ) |  | (18,808 | )
Interest charged to cost of sales |  | (581 | ) |  | (1,136 | ) |  | (1,471 | ) |  | (1,940 | )
Interest capitalized, end of period |  | $ | 3,576 |  |  | $ | 4,572 |  |  | $ | 3,576 |  |  | $ | 4,572 |

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